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diff --git a/src/mame/includes/pet.h b/src/mame/includes/pet.h
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+// license:BSD-3-Clause
+// copyright-holders:Curt Coder
+#pragma once
+
+#ifndef __PET__
+#define __PET__
+
+#include "emu.h"
+#include "bus/ieee488/c8050.h"
+#include "bus/ieee488/ieee488.h"
+#include "bus/pet/cass.h"
+#include "bus/pet/exp.h"
+#include "bus/pet/user.h"
+#include "cpu/m6502/m6502.h"
+#include "machine/6522via.h"
+#include "machine/6821pia.h"
+#include "imagedev/snapquik.h"
+#include "machine/pla.h"
+#include "machine/ram.h"
+#include "sound/speaker.h"
+#include "video/mc6845.h"
+
+#include "bus/generic/slot.h"
+#include "bus/generic/carts.h"
+
+#define M6502_TAG "f3"
+#define M6522_TAG "a5"
+#define M6520_1_TAG "g8"
+#define M6520_2_TAG "b8"
+#define MC6845_TAG "ub13"
+#define SCREEN_TAG "screen"
+#define PLA1_TAG "ue6"
+#define PLA2_TAG "ue5"
+#define PET_USER_PORT_TAG "user"
+
+class pet_state : public driver_device
+{
+public:
+ pet_state(const machine_config &mconfig, device_type type, const char *tag) :
+ driver_device(mconfig, type, tag),
+ m_maincpu(*this, M6502_TAG),
+ m_via(*this, M6522_TAG),
+ m_pia1(*this, M6520_1_TAG),
+ m_pia2(*this, M6520_2_TAG),
+ m_crtc(*this, MC6845_TAG),
+ m_ieee(*this, IEEE488_TAG),
+ m_palette(*this, "palette"),
+ m_cassette(*this, PET_DATASSETTE_PORT_TAG),
+ m_cassette2(*this, PET_DATASSETTE_PORT2_TAG),
+ m_exp(*this, PET_EXPANSION_SLOT_TAG),
+ m_user(*this, PET_USER_PORT_TAG),
+ m_speaker(*this, "speaker"),
+ m_cart_9000(*this, "cart_9000"),
+ m_cart_a000(*this, "cart_a000"),
+ m_cart_b000(*this, "cart_b000"),
+ m_ram(*this, RAM_TAG),
+ m_rom(*this, M6502_TAG),
+ m_char_rom(*this, "charom"),
+ m_video_ram(*this, "video_ram"),
+ m_row0(*this, "ROW0"),
+ m_row1(*this, "ROW1"),
+ m_row2(*this, "ROW2"),
+ m_row3(*this, "ROW3"),
+ m_row4(*this, "ROW4"),
+ m_row5(*this, "ROW5"),
+ m_row6(*this, "ROW6"),
+ m_row7(*this, "ROW7"),
+ m_row8(*this, "ROW8"),
+ m_row9(*this, "ROW9"),
+ m_lock(*this, "LOCK"),
+ m_key(0),
+ m_sync(0),
+ m_graphic(0),
+ m_blanktv(0),
+ m_via_irq(CLEAR_LINE),
+ m_pia1a_irq(CLEAR_LINE),
+ m_pia1b_irq(CLEAR_LINE),
+ m_pia2a_irq(CLEAR_LINE),
+ m_pia2b_irq(CLEAR_LINE),
+ m_exp_irq(CLEAR_LINE),
+ m_user_diag(1)
+ { }
+
+ required_device<m6502_device> m_maincpu;
+ required_device<via6522_device> m_via;
+ required_device<pia6821_device> m_pia1;
+ required_device<pia6821_device> m_pia2;
+ optional_device<mc6845_device> m_crtc;
+ required_device<ieee488_device> m_ieee;
+ required_device<palette_device> m_palette;
+ required_device<pet_datassette_port_device> m_cassette;
+ required_device<pet_datassette_port_device> m_cassette2;
+ required_device<pet_expansion_slot_device> m_exp;
+ required_device<pet_user_port_device> m_user;
+ optional_device<speaker_sound_device> m_speaker;
+ optional_device<generic_slot_device> m_cart_9000;
+ optional_device<generic_slot_device> m_cart_a000;
+ optional_device<generic_slot_device> m_cart_b000;
+ required_device<ram_device> m_ram;
+ required_memory_region m_rom;
+ required_memory_region m_char_rom;
+ optional_shared_ptr<UINT8> m_video_ram;
+ required_ioport m_row0;
+ required_ioport m_row1;
+ required_ioport m_row2;
+ required_ioport m_row3;
+ required_ioport m_row4;
+ required_ioport m_row5;
+ required_ioport m_row6;
+ required_ioport m_row7;
+ required_ioport m_row8;
+ required_ioport m_row9;
+ required_ioport m_lock;
+
+ DECLARE_MACHINE_START( pet );
+ DECLARE_MACHINE_START( pet2001 );
+ DECLARE_MACHINE_RESET( pet );
+ DECLARE_MACHINE_START( pet40 );
+ DECLARE_MACHINE_RESET( pet40 );
+
+ MC6845_BEGIN_UPDATE( pet_begin_update );
+ MC6845_UPDATE_ROW( pet40_update_row );
+
+ UINT32 screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect);
+
+ void check_interrupts();
+ void update_speaker();
+
+ DECLARE_READ8_MEMBER( read );
+ DECLARE_WRITE8_MEMBER( write );
+
+ DECLARE_WRITE_LINE_MEMBER( via_irq_w );
+ DECLARE_WRITE8_MEMBER( via_pa_w );
+ DECLARE_READ8_MEMBER( via_pb_r );
+ DECLARE_WRITE8_MEMBER( via_pb_w );
+ DECLARE_WRITE_LINE_MEMBER( via_ca2_w );
+ DECLARE_WRITE_LINE_MEMBER( via_cb2_w );
+
+ DECLARE_WRITE_LINE_MEMBER( pia1_irqa_w );
+ DECLARE_WRITE_LINE_MEMBER( pia1_irqb_w );
+ DECLARE_READ8_MEMBER( pia1_pa_r );
+ DECLARE_READ8_MEMBER( pia1_pb_r );
+ DECLARE_WRITE8_MEMBER( pia1_pa_w );
+ DECLARE_WRITE_LINE_MEMBER( pia1_ca2_w );
+
+ DECLARE_WRITE_LINE_MEMBER( pia2_irqa_w );
+ DECLARE_WRITE_LINE_MEMBER( pia2_irqb_w );
+
+ DECLARE_WRITE_LINE_MEMBER( user_diag_w );
+
+ TIMER_DEVICE_CALLBACK_MEMBER( sync_tick );
+
+ DECLARE_QUICKLOAD_LOAD_MEMBER( cbm_pet );
+
+ enum
+ {
+ SEL0 = 0,
+ SEL1,
+ SEL2,
+ SEL3,
+ SEL4,
+ SEL5,
+ SEL6,
+ SEL7,
+ SEL8,
+ SEL9,
+ SELA,
+ SELB,
+ SELC,
+ SELD,
+ SELE,
+ SELF
+ };
+
+ // keyboard state
+ UINT8 m_key;
+
+ // video state
+ int m_sync;
+ int m_graphic;
+ int m_blanktv;
+ int m_video_ram_size;
+
+ // sound state
+ int m_via_cb2;
+ int m_pia1_pa7;
+
+ UINT8 m_via_pa;
+
+ // interrupt state
+ int m_via_irq;
+ int m_pia1a_irq;
+ int m_pia1b_irq;
+ int m_pia2a_irq;
+ int m_pia2b_irq;
+ int m_exp_irq;
+ int m_user_diag;
+};
+
+
+class pet2001b_state : public pet_state
+{
+public:
+ pet2001b_state(const machine_config &mconfig, device_type type, const char *tag) :
+ pet_state(mconfig, type, tag)
+ { }
+
+ DECLARE_READ8_MEMBER( pia1_pb_r );
+};
+
+
+class pet80_state : public pet2001b_state
+{
+public:
+ pet80_state(const machine_config &mconfig, device_type type, const char *tag) :
+ pet2001b_state(mconfig, type, tag)
+ { }
+
+ DECLARE_MACHINE_START( pet80 );
+ DECLARE_MACHINE_RESET( pet80 );
+
+ MC6845_UPDATE_ROW( pet80_update_row );
+ MC6845_UPDATE_ROW( cbm8296_update_row );
+};
+
+
+class superpet_state : public pet80_state
+{
+public:
+ superpet_state(const machine_config &mconfig, device_type type, const char *tag)
+ : pet80_state(mconfig, type, tag)
+ { }
+};
+
+
+class cbm8096_state : public pet80_state
+{
+public:
+ cbm8096_state(const machine_config &mconfig, device_type type, const char *tag) :
+ pet80_state(mconfig, type, tag)
+ { }
+};
+
+
+class cbm8296_state : public pet80_state
+{
+public:
+ cbm8296_state(const machine_config &mconfig, device_type type, const char *tag) :
+ pet80_state(mconfig, type, tag),
+ m_basic_rom(*this, "basic"),
+ m_editor_rom(*this, "editor"),
+ m_ue5_rom(*this, "ue5_eprom"),
+ m_ue6_rom(*this, "ue6_eprom"),
+ m_pla1(*this, PLA1_TAG),
+ m_pla2(*this, PLA2_TAG)
+ { }
+
+ required_memory_region m_basic_rom;
+ required_memory_region m_editor_rom;
+ required_memory_region m_ue5_rom;
+ required_memory_region m_ue6_rom;
+ required_device<pla_device> m_pla1;
+ required_device<pla_device> m_pla2;
+
+ DECLARE_MACHINE_START( cbm8296 );
+ DECLARE_MACHINE_RESET( cbm8296 );
+
+ void read_pla1(offs_t offset, int phi2, int brw, int noscreen, int noio, int ramsela, int ramsel9, int ramon, int norom,
+ int &cswff, int &cs9, int &csa, int &csio, int &cse, int &cskb, int &fa12, int &casena1);
+ void read_pla2(offs_t offset, int phi2, int brw, int casena1, int &endra, int &noscreen, int &casena2, int &fa15);
+
+ void read_pla1_eprom(offs_t offset, int phi2, int brw, int noscreen, int noio, int ramsela, int ramsel9, int ramon, int norom,
+ int &cswff, int &cs9, int &csa, int &csio, int &cse, int &cskb, int &fa12, int &casena1);
+ void read_pla2_eprom(offs_t offset, int phi2, int brw, int casena1, int &endra, int &noscreen, int &casena2, int &fa15);
+
+ DECLARE_READ8_MEMBER( read );
+ DECLARE_WRITE8_MEMBER( write );
+
+ UINT8 m_cr;
+};
+
+
+
+#endif